It does not make sense if 4 Gb mean that you can only run a browser and Notepad.
If, however, you are a bit older and you remember the time that you had the choice between 4 MB and 8 MB and people were still able to do all their computer stuff, including internet, in a graphical environment, then you thoughts are more in the line of: what the fuck are these lazy and incompetent programmers doing these days? And this is coming from someone who earns a living as a developer.
If you spend a half hour over the entire life of your machine even considering RAM, you might as well double it for $30.
Using RAM is good. It's fast, it's cheap, and anybody with 8 gigs has it in abundance
Seems reasonable for 2019.
Also, in laptops you cannot upgrade the motherboard.
No? ~$100 is remarkably cheap for a new motherboard, especially if you are complaining about needing 32+GB of RAM, which costs substantially more than $40. If you want something like a $35 Raspberry pi, buy one and accept its limitations.
The Windows tablet/notebook (hybrid) being sold as their latest product by a company I'm doing business with at the moment has 4GB. It's a shame, because Electron would totally fit what their business runs on those tablets, which is a Javascript-based graphical environment...